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Linear representations of algebras and groups, Lie theory, associative algebras, multilinear algebra.

5 votes
1 answer
250 views

Jacquet Module of an Essentially Square Integrable Representation

Let $F$ be a $p$-adic field. Let $G$ be a connected reductive group and $\rho$ an irreducible admissible representation of $G(F)$. Let $P$ be a parabolic subgroup of $G$ and suppose further that $\rho …
Alexander's user avatar
  • 953
2 votes
1 answer
148 views

Why are Trace characters regular functions on the Bernstein Variety?

Given a $p$-adic reductive group $G$ with Grothendieck group $R(G)$ and $f$ an element of the Hecke Algebra $H(G)$ we can consider the function $x: R(G) \to \mathbb{C}$ given by $\pi \mapsto trace \p …
Alexander's user avatar
  • 953
2 votes
0 answers
80 views

Pseudocoefficients and Traces of Standard Representations

Let $G$ be a connected reductive group over $\mathbb{R}$ (you may assume that $G/Z(G)$ is anisotropic if necessary) and suppose $\pi$ is a discrete series representation of $G(\mathbb{R})$ with centra …
Alexander's user avatar
  • 953
3 votes
0 answers
87 views

Recovering a $G$-valued representation/parameter

Number theoretic phrasing Let $G$ be a connected reductive group over a characteristic $0$ field $F$. Associated to $G$ is its Langlands dual group $^{L}G$. For every dominant cocharacter $\mu$ of $G …
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